Lock.



A. MGCLEARY.

LOCK.

PATENTED DEC. ll1, 1906.

APLICATIN FILED JUNE 7, 1905.

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A EXANDER MCCLEARY @Vilma ,a

,1. ,W li/ @0 UNITED srrirEje EEE DENVER., coLoEADo, Assisnoir oroNE-HALE ALExANDEE MCCLEARY, or

NT OFFICE.

TO FRANK DAVID THOMPSON AND WELLINGTON STANLEY KORFH AGE,

OF DENVER, COLORADO.

LOCK.

Specification of Letters Patent.

Patented Dec. 11, 1906.

Application iiled June '7, 1905'. Serial Noy 264,155.

and. State of Colorado, have invented certain new and usefulImprovements in Locks, of which the following is a specification.

This invention, which relates to improvements in spring or draw-boltlocks, has tor its object the provision of a simple, easily-operated,and highly-eifective lock of the class named which, being entirelycomposed of cy lindrical and circular shaped parts, may readily be putin place and adjusted on a door by means of an ordinary auger andwithout the use of chisels or similar tools. I attain this object by themechanisrnillustrated i'n the accompanying drawings,r in the variousviews of which like parts are similarly indicated, and in which- Figurerepresents a vertical section v'through a doorand jamb, showing my lockin place and its casing in section; Fig. 2, a horizontal section takenalong the line 2 2, Fig. 1, the draw-bolt, knob, spindle, and, key boltbeing shown in elevation Fig. 3, a crosssection along line 3 3, Fig. 2,`looking in the direction of the arrow; Fig. 4, a cross-section alongline 4 4, Fig. 2; Fig. 5, a cross-section along line 5 5, Fig. 2; Fig.6, a fragmentary Vperspective view of the lower part ofthe key used to'operate the pinion-spindle of my lock, and Fig. 7 a similar view of oneof the ex-` tremities of the key-bolt.

My lock comprises a tubular barrel or housing 5 and a cylindricaldraw-bolt 6, having a longitudinally-rectilinear reciprocating movementtherein and maintained in the extended'or locked position by atension-spring 7. Bolt 6 is provided at its outer extremity with thesquare and beveled head 8, normally extending in aycorrespondingly-shaped recess 9 in the door-j amb 1.0. This recess, likethe other mortises required to place my lock, is made cylindrical and isprotected by the strike-plate 11, which may also be made Ycircular inoutline. When the bolt is retracted, head 8 enters acorrespondingly-shaped recess 12, formed in the enlarged outer extremity13 of barrel 5. Head 8 being larger than the main body of the bolt formsa shoulder 14, while athumb-screw 15, passing through a cylindricalopening 16 in door 17 projects into a correspondingly-tapped aperture 18,6, as illustrated in Figs. 1, 2, and 5.

in the enlarged part 13 of casing 5, Screw 15, being located on theinside of the door, constitutes the night-latch, by which the bolt maybe locked against retraction by either knob or key. When it is desiredto thus secure the door, thumb-screw 15 is turned to project into recess12in the path oi' the shoulder 14 of head 8, which engaging theprotruding end of the screw arrests further inward movement of the bolt.The innermost extremity 19 of bolt 6 has been reduced to form a shoulder20 for the spiral spring. 7, which being placed around the rej ducedportion engages said shoulder and the 6nd plate 21 of barrel'5. Theouter extrem ity of the reduced end 19 of the bolt is threaded andprojects beyond the end plate 21, where a nut 22, screwed onto saidextremity, limits the outward movement of the bolt. Nut 22, furthermore,affords means to regulate the lengt-h of stroke of the bolt as well asthe tension of spring 7.

Bolt 6 may be retracted by turning knobs 23, located at each side ofdoor 17 and mountrespondingapertures 25 and 25. A toothed pinion 26,rigidly mounted on this'. spindle,

extends through an opening 6a in the casing and engages a rack 27, whichextends along the upper surface of bolt 6.

To lock door 17, it is essential that the bolt should -be iirmly heldAagainst linear movement. 'This object may be' accomplished from eitherside by means of the cylindrical key-bolt 28, which extends transverselyof bo t 6 through apertures y29 29 in door 17.

When in the locking position, bolt 28 projects through a lcorrespondingly-formed notch or recess 30 in the upper surface of bTllte central. portion of bolt 28, extending over the draw-bolt, has alsobeen provided with a similar recess or depression 31 of a depthsufficient to bring the peripheral surface of the key-bolt out ofengagement with the recess in the draw-bolt when the vformer has beenturned to bring the two recesses o posite each other. Placed on eachside of oor 17 are the customary escutcheons 32, having openings 33,through which the knob-spindle projects, and apertures 34, through whichthe key 38, operating bolt 28, may be introduced. Apertures 34 extendthroughoutwardly-extending cylindrical projections 35 IOO v erably wire,spring Il?,

on the escutcheons, having similarly-shaped recesses 36 on their innersurface 'for the accommodation ot projections 37 on the key 38.

it will be understood that the form or construction of the Working endof the key may loe varied, so that no tufo shall be alike, and that theaperture 34C, a Yell as the apertures 39 in the ends oi the bolt, are'made to conform with the cons the particular key provided for fornipart,

The key, as shown "r drical extremity or opposite transverseljyapertures Se; the key-.ooit are sh sage or pin i turn key-bolt "3 one etthe apertures in the circular recess Y turned until the proies ons iinregister with the elefts or grooves 39a o. key-bolt, in which theypressing key 38 inwardly.

.Key-boit 28 is retained in the locked and unlocked positions by meanset a weak', orefwhich being held at its upper extremity i8 in a recesst6 in door l? extends downwardly and projects into the uppermost cleftof the aperture 39 at one or' the ends of the key-bolt.

ldhen the bolt is being turned, the exections f in tire y inserted bytremity of spring 47, leaving groove 39,

.through instrumentality of the pinion and rack.

When locked by key 38 or thumb-screw 15, the bolt may be released fromeither side by action of the key and key-bolt or by Withdrawing screw 15on the inside of the door, while the corresponding construction of thesenese apertures in the escutcheons and the keybolt and the working endof the key prevents opening of the lock by any but its own proper key.

To place the lock in the door7 three concentric recesses 40, 41, and e2are drilled to permit insertion of the tubular housing 5 and theprotruding extremity et bolt 6 with nut 22. Similar holes 25 and 29 aredrilled for spindle 24 of knobs 23 and for the key-bolt, While shallowcylindrical recesses drilled at each side ot the barrel-hole in the edgeof the door all'ord accommodation i'or the correspondingly-shapedselvage or face-plate e3.

The entire structure is held in place by the escutche s 32, secured byscrews and screws 5.45, passing through the face-plate.

'aving thus descrined my invention, what claim ilsi. .si lock comprisingtubular housing, e. cylindrical tirar-bolt therein, having reduced rearend, and an arc-snaped rece 30, a rack on said bolt, spindle, a pinion Jereon engaging with the rack to reciprocate the holt, a key-holtextending transversely oi' said draw-bolt and through the arc-shaped4recess therein, said key-bolt having a corresponding recess therein,escutcheons having o enings therein for the passage oi the spind e, andalso having cylindrical projections thereon extending over the ends ofthe keybolt to hold the same in place; a key for turning the key-bolt tobring the recess therein opposite the recess in the draw-bolt, saidprojections on the escutcheons having openings therein for the passageof the key and a spring on the reduced end of the draw-bolt having itsends bearing against the said bolt and a part of the housing.

2. A lock comprising a tubular housing, a draw-bolt having a'reciprocating movement therein', means to shoot and retract said bolt, ake -bolt extending transversely of said drawbo t through a peripheralrecess thereof and adapted to be turned out of engagement therewith, anda spring projecting into one of a'plurality of suitable recesses in saidbolt.

In testimony whereof` I have affixed my signature in presence of twowitnesses.

ALEXANDER MCCLEARY.

Witnesses G. J. RoLLANDET, K. M. STUMP.

IOO

